<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>flex display</title>
		<link href="flex.css" rel="stylesheet" type="text/css" />
	</head>
	<body>
		<div class="root">
			<ul class="flex_p">
				<li class="flex_s">1</li>
				<li class="flex_s">2</li>
				<li class="flex_s">3</li>
				<li class="flex_s">4</li>
				<li class="flex_s">1</li>
				<li class="flex_s">2</li>
				<li class="flex_s">3</li>
				<li class="flex_s">4</li>
				<li class="flex_s">1</li>
				<li class="flex_s">2</li>
				<li class="flex_s">3</li>
				<li class="flex_s">4</li>
				<li class="flex_s">1</li>
				<li class="flex_s">2</li>
				<li class="flex_s">3</li>
				<li class="flex_s">4</li>
				<li class="flex_s">1</li>
				<li class="flex_s">2</li>
				<li class="flex_s">3</li>
				<li class="flex_s">4</li>
				<li class="flex_s">1</li>
				<li class="flex_s">2</li>
				<li class="flex_s">3</li>
				<li class="flex_s">4</li>
			</ul>
		</div>
	</body>
</html>
